CN214656064U - Road structure - Google Patents

Abstract

The utility model provides a road structure. The road structure includes a plurality of prefabricated slab units, a connection plate, a first screw connector, and a first filling part. The connecting plates are respectively covered on the bottom walls of the grooves of the two adjacent precast slab units. The connecting plate is provided with at least two first connecting holes, and the at least two first connecting holes respectively correspond to the two adjacent prefabricated plate units. One end of each first threaded connecting piece is positioned inside the corresponding prefabricated plate unit, and the other end of each first threaded connecting piece protrudes out of the bottom wall of the corresponding groove and penetrates through the corresponding first connecting hole, so that the bottom wall of the corresponding groove can be fixedly connected with the connecting plate through the first threaded connecting pieces, and the two adjacent prefabricated plate units can be fixedly connected with the connecting plate through the corresponding first threaded connecting pieces.

Description

Road structure

Technical Field

The utility model relates to a road design technical field, in particular to road structure.

Background

The heavy part roads in the nuclear power engineering include all main transportation roads from a heavy part wharf to each nuclear island area, roads including the periphery of the nuclear island, and the like. Because the heavy road is subjected to vehicle transportation of oversized overweight equipment, the current road surface adopts a cast-in-place reinforced concrete road surface. The existing cast-in-place pavement structure has the following problems: because the reinforced concrete structure surface layer needs to be cast in situ, the reinforced concrete structure surface layer can be put into use after the concrete reaches certain strength, so that the site construction period is longer, and cost control is not facilitated due to the fact that the reinforced concrete structure surface layer can not be reused.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a road structure which has a short construction period and can be reused, in order to solve the problems that the construction period is long and the conventional heavy road surface structure cannot be reused.

The embodiment of the application provides a road structure, includes:

the edge of each prefabricated plate unit is provided with a groove which is sunken along the thickness direction, and the grooves of two adjacent prefabricated plate units are communicated;

the connecting plates are respectively covered on the bottom walls of the grooves of the two adjacent precast slab units, and at least two first connecting holes are formed in the connecting plates and respectively correspond to the two adjacent precast slab units;

the first threaded connecting pieces are in one-to-one correspondence with the first connecting holes, one ends of the first threaded connecting pieces are positioned in the precast slab units, the other ends of the first threaded connecting pieces protrude out of the bottom walls of the grooves and penetrate through the corresponding first connecting holes, and the connecting plates are fixedly connected with the bottom walls of the grooves through the corresponding first threaded connecting pieces; and

and the first filling part is filled in the grooves of two adjacent precast slab units.

In the road structure, the connecting plates are respectively covered on the bottom walls of the grooves of the two adjacent prefabricated plate units. The connecting plate is provided with at least two first connecting holes, and the at least two first connecting holes respectively correspond to the two adjacent prefabricated plate units. One end of each first threaded connecting piece is positioned inside the corresponding prefabricated plate unit, and the other end of each first threaded connecting piece protrudes out of the bottom wall of the corresponding groove and penetrates through the corresponding first connecting hole, so that the bottom wall of the corresponding groove can be fixedly connected with the connecting plate through the first threaded connecting pieces, and the two adjacent prefabricated plate units can be fixedly connected with the connecting plate through the corresponding first threaded connecting pieces. When the road construction is carried out, a plurality of prefabricated plate units prefabricated in advance are connected through the first threaded connecting piece and the connecting plate in the connecting mode, the construction is convenient, and the construction period is short. And the grooves of two adjacent prefabricated plate units are filled by the first filling parts, so that the connection position of the two prefabricated plate units can be kept smooth, and the pavement flatness is good. And after the first filling part is removed, the first threaded connecting piece is unscrewed, so that the connection between the adjacent prefabricated plate units can be released, the prefabricated plate units can be reused, and the cost is saved.

In one embodiment, the bottom wall of the groove is provided with first preformed holes extending along the thickness direction of the precast slab unit, the first preformed holes correspond to the first connecting holes one to one, the first threaded connecting piece is an expansion bolt, and the first threaded connecting piece is respectively matched with the first connecting holes and the first preformed holes; or the like, or, alternatively,

the first threaded connecting piece is embedded in the precast slab unit.

In an embodiment, the first filling portion is made of plain concrete and is poured in the groove.

In one embodiment, the surface of the first filling part facing away from the bottom wall of the groove is flush with the surface of the precast slab unit.

In one embodiment, the road structure further comprises a cover plate covering the surface of the first filling part, which faces away from the bottom wall of the groove, and the cover plate is flush with the surface of the precast slab unit.

In one embodiment, the precast slab unit is provided with a second preformed hole;

the road structure further includes:

the embedded part is embedded in the precast slab unit, a second connecting hole is formed in the embedded part, and the second connecting hole is aligned with the second reserved hole;

the second threaded connecting piece is used for being matched with the second connecting hole and the second reserved hole respectively, and the second threaded connecting piece is an expansion bolt; and

and the hanging ring can be connected with the precast slab unit through the second threaded connecting piece.

In one embodiment, the road structure further comprises:

the reinforced steel bar is fixedly connected with the embedded part and is embedded in the precast slab unit; and/or the presence of a gas in the gas,

and the second filling part is used for plugging the second preformed hole after the lifting ring is detached.

In one embodiment, the road structure further comprises: and a third filling part for filling gaps between the adjacent precast slab units.

In one embodiment, the precast slab unit is made of steel fiber concrete.

In one embodiment, the volume ratio of the steel fiber concrete is 0.5-2%.

Drawings

FIG. 1 is a top view of a roadway structure according to one embodiment;

FIG. 2 is a partial cross-sectional view of the roadway structure of FIG. 1;

FIG. 3 is a schematic view showing the positional relationship between adjacent precast slab units in FIG. 2;

FIG. 4 is another partial sectional view of the prefabricated panel unit of FIG. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 in conjunction with fig. 2 and 3, an embodiment of the present application provides a road structure 100. The road structure 100 includes a plurality of prefabricated slab units 110, a connection plate 120, and a first screw-coupling member 130. The edge of each prefabricated panel unit 110 is provided with a groove 101 depressed in the thickness direction, and the grooves 101 of adjacent two prefabricated panel units 110 are communicated. The connecting plates 120 are respectively covered on the bottom walls of the grooves 101 of two adjacent prefabricated plate units 110. The connecting plate 120 is provided with at least two first connecting holes (not shown) corresponding to the adjacent two prefabricated panel units 110, respectively. The first threaded connectors 130 correspond to the first connection holes one to one. The first screw-threaded connector 130 has one end positioned inside the corresponding prefabricated panel unit 110 and the other end protruding from the bottom wall of the corresponding recess 101 and passing through the corresponding first coupling hole. The web 120 is connected to the bottom wall of each groove 101 by a corresponding first threaded connection 130. The first filling part 140 is filled in the grooves 101 of the adjacent two prefabricated panel units 110.

Specifically, the roadway structure 100 generally includes a face layer, a base layer, a sub-base layer, and the like. A plurality of connected prefabricated panel units 110 are used to construct the upper layer. A base layer with the thickness of 150mm can also be laid under the surface layer. For the field with the foundation bearing capacity less than 70MPa, graded broken stones with the thickness of 150mm can be added below the base layer to serve as the base layer.

The material used for the prefabricated panel unit 110 may be steel fiber concrete, wherein the steel fiber may be steel ingot milled steel fiber. The specific number of the precast slab units 110 may be determined according to the size of the road structure 100. In the present embodiment, each prefabricated panel unit 110 is sized such that: 200mm thick, 5m long and 5m wide. The size of the precast slab unit 110 can be designed into other sizes according to actual needs.

The following description will be made by taking two adjacent precast slab units 110 as a first precast slab unit 111 and a second precast slab unit 112, respectively, as an example. Referring to FIG. 3 in conjunction with FIG. 1, when the adjacent first precast slab unit 111 and second precast slab unit 112 are coupled, the recesses 101 of the two precast slab units 110 are positioned to correspond, so that the recesses 101 of the two precast slab units 110 can be communicated.

Specifically, the connecting plate 120 may be a steel plate, and in this embodiment, the connecting plate 120 has a thickness of 10mm, a length of 300mm, and a width of 20 mm. Referring to FIGS. 2 and 3, when the connecting plate 120 is used to connect two adjacent precast slab units 110, a portion of the connecting plate 120 is positioned to cover the bottom wall of the recess 101 of the first precast slab unit 111, and another portion is positioned to cover the bottom wall of the recess 101 of the second precast slab unit 112. And, the connection plate 120 has at least two first connection holes, a portion of which corresponds to the first precast panel unit 111 and another portion of which corresponds to the second precast panel unit 112.

The first screw connectors 130 correspond to the first coupling holes one-to-one, so that a portion of the first screw connectors 130 correspond to the first precast slab unit 111 and another portion of the first screw connectors 130 correspond to the second precast slab unit 112. The first threaded connection 130 may employ a screw. One end of the screw rod can be pre-embedded inside the corresponding prefabricated plate unit 110, the other end of the screw rod protrudes out of the bottom wall of the corresponding groove 101 and penetrates through the corresponding first connecting hole, and the screw rod and the connecting plate 120 are screwed by using a nut, so that the bottom wall of the groove 101 corresponding to the first threaded connecting piece 130 and the connecting plate 120 can be fixedly connected, that is, the corresponding prefabricated plate unit 110 and the connecting plate 120 are fixedly connected through the first threaded connecting piece 130. As shown in FIG. 2, the first and second prefabricated panel units 111 and 112 are fixedly coupled to the coupling plate 120 by means of the first screw coupling members 130, respectively, so that the first and second prefabricated panel units 111 and 112 are securely coupled.

The first filling part 140 may use plain concrete. After the first precast slab unit 111 and the second precast slab unit 112 are fixedly connected by the corresponding first screw connection member 130 and the connection plate 120, plain concrete may be poured into the grooves 101 of the two precast slab units 110, and after the plain concrete is solidified, the two precast slab units 110 may be more firmly connected. And since the first filling part 140 fills the grooves 101 of the two prefabricated panel units 110, the surface of the joint of the two prefabricated panel units 110 can be kept flat.

Further, since the first filling part 140 is made of plain concrete, which is easier to remove, when the road structure 100 needs to be removed, the plain concrete filled in the groove 101 can be removed, and then each first threaded connector 130 is loosened from the connecting plate 120 by rotating each first threaded connector 130, so that the adjacent precast slab units 110 can be disconnected from each other, and the surface course of the road structure 100 can be removed without damaging the precast slab units 110, so that the undamaged precast slab units 110 can be reused in other road structures 100, which is beneficial to saving construction cost.

In the road structure 100, the connecting plates 120 are respectively covered on the bottom walls of the grooves 101 of the two adjacent prefabricated plate units 110. The connecting plate 120 is provided with at least two first connecting holes, which correspond to two adjacent prefabricated plate units 110, respectively. One end of the first threaded connector 130 is positioned inside the corresponding prefabricated panel unit 110, and the other end protrudes out of the bottom wall of the corresponding groove 101 and passes through the corresponding first connecting hole, so that the first threaded connector 130 can fixedly connect the bottom wall of the corresponding groove 101 with the connecting plate 120, and thus two adjacent prefabricated panel units 110 can be fixedly connected with the connecting plate 120 through the respective corresponding first threaded connectors 130.

Compared with the prior art, the road structure 100 of the present application adopts the first threaded connection member 130 and the connection plate 120 to fixedly connect the adjacent precast slab units 110, the connection is tight, the construction is convenient, and the construction period is short. And the grooves 101 of the two prefabricated panel units 110 are filled by the first filling part 140, so that the connection part of the two prefabricated panel units 110 can be kept flat, and the pavement flatness is good. The connection between the adjacent prefabricated panel units 110 can be released by unscrewing the first screw-type connection member 130 after removing the first filling part 140, so that the prefabricated panel units 110 can be reused, thereby saving costs.

Referring to fig. 3, in an embodiment, the bottom wall of the recess 101 is provided with first preformed holes 102 extending along the thickness direction of the prefabricated plate unit 110, the first preformed holes 102 correspond to the first connection holes one to one, the first threaded connectors 130 are expansion bolts, and the first threaded connectors 130 are respectively matched with the first connection holes and the first preformed holes 102.

Specifically, in the present embodiment, the first threaded connection 130 employs an M20 expansion bolt having a length of 150 mm. The first connecting hole is a threaded hole. When the connecting plate 120 is covered on the bottom wall of the groove 101, the first connecting holes are aligned with the corresponding first preformed holes 102, and then expansion bolts are inserted into the first connecting holes and the first preformed holes 102 in sequence and then tightened, thereby fastening the connecting plate 120 to the prefabricated plate unit 110 by the expansion bolts. Because first threaded connection 130 adopts expansion bolts, consequently, first preformed hole 102 can be the unthreaded hole, makes the first connecting hole the screw hole, and expansion bolts can cooperate with first preformed hole 102 through screwing up with the screw tooth of first connecting hole.

Referring to fig. 2, in an embodiment, the road structure 100 further includes a cover plate 150. The cover plate 150 covers the surface of the filling part facing away from the bottom wall of the recess 101, and the cover plate 150 is flush with the surface of the precast slab unit 110.

Specifically, the cover plate 150 may be a steel plate. As shown in fig. 3, the surface of the first filling part 140 facing away from the bottom wall of the groove 101, i.e., the upper surface of the first filling part 140. In this embodiment, after the first filling part 140 is poured, the cover plate 150 is covered on the upper surface of the first filling part 140 when the first filling part 140 is not solidified, and then the cover plate 150 is fixedly connected with the first filling part 140 when the first filling part 140 is solidified, so that two adjacent precast slab units 110 can be further fixedly connected.

Since the cover plate 150 is flush with the surface of the precast slab unit 110, the road surface can be kept flat.

In other embodiments, the cover plate 150 may not be provided, and the upper surface of the first filling part 140 may be flush with the upper surface of the precast slab unit 110, so that the road surface may be kept flat.

Referring to FIG. 4, in one embodiment, the prefabricated plate unit 110 is provided with a second preformed hole 103. The roadway structure 100 further includes an embedment 160 and a second threaded connector 180. The embedded part 160 is embedded in the precast slab unit 110 and exposed out of the surface of the precast slab unit 110, and a second connection hole (not shown) is formed in the embedded part 160, and the second connection hole is aligned with the second reserved hole 103. The second screw connection 180 is adapted to cooperate with the second connection hole and the second prepared hole 103, respectively. The second threaded connector 180 is an expansion bolt. The hanging ring 170 can be coupled to the prefabricated panel unit 110 by a second screw coupling member 180.

Specifically, the embedment 160 may be an embedment steel plate. When the hanging ring 170 is installed, the second screw connector 180 can be securely coupled to the prefabricated panel unit 110 by inserting the second screw connector 180 into the second coupling hole and the second prepared hole 103 in order and then tightening the second screw connector 180. The hanging ring 170 and the second threaded connecting member 180 can be fixedly connected by welding and the like, so that the hanging ring 170 and the prefabricated plate unit 110 are fixedly connected through the second threaded connecting member 180, the prefabricated plate unit 110 is conveniently hoisted through the hanging ring 170, and construction and transportation are convenient.

Because the second threaded connector 180 adopts an expansion bolt, the second preformed hole 103 can be a smooth hole, the second connecting hole is made into a threaded hole, and the second threaded connector 180 can be matched with the second preformed hole 103 by screwing with the thread of the second connecting hole.

Referring to fig. 4, in an embodiment, the road structure 100 further includes: reinforcing bars 190. The reinforcing steel bars 190 are fixedly connected with the embedded parts 160 and embedded inside the precast slab unit 110.

Specifically, as shown in fig. 4, the reinforcing bar 190 has a first portion 191 extending in a vertical direction and a second portion 192 extending in a horizontal direction. One end of the first portion 191 is fixedly connected to the second portion 192 and the other end is fixedly connected to the embedment 160. The reinforcing bars 190 and the embedment 160 may be connected by welding.

Because the reinforcing steel bars 190 are pre-embedded inside the precast slab unit 110 and fixedly connected with the pre-embedded part 160, the connection strength of the pre-embedded part 160 and the precast slab unit 110 in the thickness direction is enhanced. When the precast slab unit 110 is hoisted through the hoisting ring 170, the embedded part 160 is not easy to be separated from the precast slab unit 110, and the anti-pulling performance of the embedded part 160 is improved.

In an embodiment, the road structure 100 further comprises a second filling portion (not shown). The second filling portion is used for plugging the second preformed hole 103 after the hanging ring 170 is removed.

Specifically, when the construction is completed, the second screw connector 180 may be rotated to be loosened, so that the hoist ring 170 can be removed from the prefabricated panel unit 110. And then the second preformed hole 103 is sealed by the second filling part, which is beneficial to keeping the road surface flat at the second preformed hole 103.

The second filling portion may be formed of a styrofoam material or the like. The foamed polyphenyl material has the advantages of water resistance, light weight and the like.

In an embodiment, the road structure 100 further comprises a third filling portion (not shown). The third filling part is used to fill the gaps 104 between the adjacent prefabricated panel units 110.

Specifically, the third filling part can be made of foam plastic, sponge and other materials with good buffering performance. When the road structure 100 is subjected to impact or vibration, a buffering effect is provided between the adjacent prefabricated panel units 110, and the damage phenomenon at the joints of the adjacent prefabricated panel units 110 is reduced.

In one embodiment, the precast slab unit 110 uses steel fiber concrete with a volume ratio of 0.5% to 2%.

In particular, the steel fiber concrete has good strength, rigidity, wear resistance and impact resistance.

Compared with the pavement structure in the prior art, the precast slab unit 110 made of steel fiber concrete in the embodiment of the present application can effectively enhance the bearing capacity of the pavement structure 100. Meanwhile, under the same bearing capacity, the precast slab unit 110 can be made thinner, so that the design thickness of a road structure can be reduced, and the transportation difficulty can be further reduced. When the volume ratio of the steel fiber concrete is 0.5-2%, the thickness of the road structure 100 can be reduced by at least 30%. The volume ratio of the steel fiber concrete may be, for example, 0.5%, 0.8%, 1.1%, 1.6%, 2%

Because the design thickness of road structure reduces to can reduce road surface foundation ditch excavation volume, to the backfill region, the backfill volume is little, can reduce engineering cost.

Further, since the steel fiber reinforced concrete structure has good abrasion resistance and impact resistance, when the road structure 100 is subjected to impact and vibration, it is possible to reduce the breakage at the joints of the adjacent precast slab units 110, thereby making it possible to extend the service life of the precast slab units 110. Indoor tests show that the impact resistance of the steel fiber concrete precast slab unit 100 can be improved by 3-4 times compared with the traditional precast slabs.

In one embodiment, reinforcing bars may be further added to the prefabricated panel unit 100 to enhance the load-bearing capacity of the prefabricated panel unit 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A roadway structure, comprising:

the edge of each prefabricated plate unit is provided with a groove which is sunken along the thickness direction, and the grooves of two adjacent prefabricated plate units are communicated;

the connecting plates are respectively covered on the bottom walls of the grooves of the two adjacent precast slab units, and at least two first connecting holes are formed in the connecting plates and respectively correspond to the two adjacent precast slab units;

the first threaded connecting pieces are in one-to-one correspondence with the first connecting holes, one ends of the first threaded connecting pieces are positioned in the precast slab units, the other ends of the first threaded connecting pieces protrude out of the bottom walls of the grooves and penetrate through the corresponding first connecting holes, and the connecting plates are fixedly connected with the bottom walls of the grooves through the corresponding first threaded connecting pieces; and

and the first filling part is filled in the grooves of two adjacent precast slab units.

2. The road structure according to claim 1,

the bottom wall of the groove is provided with first preformed holes extending along the thickness direction of the precast slab unit, the first preformed holes correspond to the first connecting holes one by one, the first threaded connecting piece is an expansion bolt, and the first threaded connecting piece is respectively matched with the first connecting holes and the first preformed holes; or the like, or, alternatively,

the first threaded connecting piece is embedded in the precast slab unit.

3. The road structure according to claim 1, wherein the first filling portion is made of plain concrete and is cast in the groove.

4. The road structure according to claim 3, wherein the surface of the first filling portion facing away from the bottom wall of the recess is flush with the surface of the precast slab unit.

5. The road structure according to claim 3, further comprising a cover plate covering a surface of the first filling portion facing away from the bottom wall of the recess, the cover plate being flush with a surface of the precast slab unit.

6. The road structure according to claim 1,

the prefabricated plate unit is provided with a second preformed hole;

the road structure further includes:

the embedded part is embedded in the precast slab unit, a second connecting hole is formed in the embedded part, and the second connecting hole is aligned with the second reserved hole;

the second threaded connecting piece is used for being matched with the second connecting hole and the second reserved hole respectively, and the second threaded connecting piece is an expansion bolt; and

and the hanging ring can be connected with the precast slab unit through the second threaded connecting piece.

7. The road structure according to claim 6, further comprising:

the reinforced steel bar is fixedly connected with the embedded part and is embedded in the precast slab unit; and/or the presence of a gas in the gas,

and the second filling part is used for plugging the second preformed hole after the lifting ring is detached.

8. The road structure of claim 6, further comprising a third filling part for filling gaps between the adjacent precast slab units.

9. The road structure of claim 1, wherein the precast slab units are made of steel fiber concrete.

10. The road structure according to claim 9, characterized in that the steel fiber concrete has a volume fraction of 0.5% to 2%.

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